This headband was originally design for increased comfort for Grado SR series and Sennheiser HD series. Universal fit for many headphones like Beyerdynamic and others. (For best fit with Sennheiser HD-series the original headpad should be removed first). Will fit GRADO: SR60, SR80, SR125, SR225 and more. SENNHEISER HD525, HD535, HD545, HD565, HD580, HD699, HD650 and more. BEYERDYNAMICS DT770, DT800, DT990, DT990PRO and more